CA2196389A1 - Guide member and method for integral foam molding - Google Patents
Guide member and method for integral foam moldingInfo
- Publication number
- CA2196389A1 CA2196389A1 CA002196389A CA2196389A CA2196389A1 CA 2196389 A1 CA2196389 A1 CA 2196389A1 CA 002196389 A CA002196389 A CA 002196389A CA 2196389 A CA2196389 A CA 2196389A CA 2196389 A1 CA2196389 A1 CA 2196389A1
- Authority
- CA
- Canada
- Prior art keywords
- guide member
- fastening parts
- urethane
- isolation
- fastening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/35—Component parts; Details or accessories
- B29C44/351—Means for preventing foam to leak out from the foaming device during foaming
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/0038—Moulds or cores; Details thereof or accessories therefor with sealing means or the like
- B29C33/0044—Moulds or cores; Details thereof or accessories therefor with sealing means or the like for sealing off parts of inserts projecting into the mould cavity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/1214—Anchoring by foaming into a preformed part, e.g. by penetrating through holes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/1271—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed parts being partially covered
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Molding Of Porous Articles (AREA)
Abstract
According to the invention, a novel guide member for integrally forming the fastening parts with the urethane mold and an integral molding method using said guide member are provided. The guide member comprises a guide portion that has an extended body which includes concave cross-section and at least one opening end, and isolation members provided near the ends of said guide portion. Said isolation members are detachable, and by engaging with the fastening surface of the fastening parts, they effectively block any seepage of liquid foaming raw material. With the integral forming method using said guide member of the invention, it is possible to embed ends of the fastening parts within the urethane mold and to improve its peeling strength at low cost
Description
SPECIFICATION
Guide member and method for integral foam molding Technical Field The invention concerns a member for integrally forming a foam material such as urethane; specifically, it concerns a guide member for adhesively fixing a fastening parts to a urethane mold.
Background Art Cushion material in which the covering material is put onto urethane is generally used in seats in automobiles and other vehicles and aircraft, in chairs for home or office use, or in door linings or interior appointments. The urethane and covering material are usually put together detachably using a fastening parts that is fixed to a urethane mold.
In order to provide fastening parts on the urethane surface inexpensively and stably, the integral forming of urethane and fastening parts has been implemented. In the prior art, the fastening parts are previously covered so that the liquid foaming raw materials do not adhere to surface of the fastening parts, then the liquid foaming raw material is flowed in, and thereafter portions to which the material is attached are cut away.
With the conventional method, in order to prevent the liquid foaming raw material from adhering to the fastening surface, it has been necessary to pre-manufacture guide members which are the same length as each fastening parts and fit into a urethane metal mold. That is, the guide member must be remade for each desired length of fastening parts, which causes to increase the fabrication time and cost. In addition, additional equipment are needed for each fastening parts to prevent the liquid fo~ming raw material from f~owing onto the fastening surface, which results in the increasing of cost and the number of operation processes. Another drawback of the conventional method is that because the fastening parts has a relatively small peeling strength, the covering material of the cushion material easily peels off.
Thus the purpose of the invention is to provide a novel guide member that reduces cost and the number of processes.
Another purpose of the invention is to provide a new guide member that effectively cuts off the seepage of liquid foaming raw material onto the fastening surface.
A further purpose of the invention is to provide an integral molding method that improves the peeling strength of the fastening parts.
Disclosure of the Invention In order to achieve the above purposes, the invention comprises the following means.
According to the invention, the guide member for forming the fastening parts integrally with the urethane mold has longitllllin~lly extended body that has a concave cross-section and at least one opening end. The surface of its inner wall contact with side surfaces of said fastening parts to prevent the flow of liquid foaming raw material to the fastening surface.
In addition, to prevent said liquid foaming raw material from seeping in to the fastening surface of the interior of said guide member, said guide member may also include at least one isolation member near at least one of its ends.
The Said isolation member is provided such that it engages with the fastening surface of said fastening parts.
Moreover, the height of the inner wall of the guide member of the invention may be formed so that it is higher than the height of the fastening parts.
The isolation member is preferably a detachable thin plate made of spring material, and said guide portion is preferably made of aluminllm or aluminum alloy.
The method of the invention for integrally forming a fastening parts with the urethane mold, comprises the steps of: -setting the isolation member described in claim 2 to the desired position onthe fastening parts;
att~hing said fastening parts to said guide member described in claim 2 so that it extends outwardly from at least one end of said guide member;
f~xing said guide member to the urethane metal mold;
flowing liquid fo~ming raw material into said urethane metal mold; and removing said guide member and said isolation member after predetermined time.
Brief Description of the Drawings Figure 1 is a ~lefe~,ed embodiment of the guide member of the invention and its elevational cross-sectional view in the longitudinal direction.
Figure 2 shows the fastening parts attached to the guide member of the invention.
Figure 3 is a elevational cross-sectional view of cushion material produced by the integral molding method of the invention.
Figure 4 is another embodiment of the guide member of the invention.
Best Mode for C~r ,~yi,~g out the Invention Hereinafter, embodiments of the invention are described in detail, m~king reference to the drawings.
Figure 1 is a lJ~efe~ed embodiment of the guide member of the invention.
Guide member 1 for integral molding the fastening parts with the urethane mold comprises guide portion 2, which has an longitlltlin~lly extended body having a concave cross-sectional opening at ends 4 and 7, and isolation members 5 and 6 positioned somewhat inwardly from said ends 4 and 7 so as to be perpendicular to longitudinal axis 8.
Said guide portion 2 is preferably made of aluminum or aluminum alloy and is manufactured by extrusion moltling or injection molding. The longitudinal length of the guide portion varies depending on that of the fastening parts and the structure of cushion material, but the height of inner wall 3 is preferably 6-8 mm.
The width of the inner side of the guide member is substantially equal to the width of the fastening parts, so that when the fastening parts is attached, -the side surface of the fastening parts and inner side surface 3 of the guide member are contacted tightly. Also, a bottom surface 10 of guide member 1 is completely flat so as to be fixed firmly to the urethane metal mold.
The isolation members 5 and 6 are preferably thin plates made of spring material, alternatively may be in the shape of the letter C. They may also be made from any other materials that do not easily deform and degrade. The isolation members 5 and 6 are preferably located detachably to the inner wall surface of the guide member, and they may be fixed to predetermined position. The plate thickness of said isolation members 5 and 6 is preferable 0.2 mm. Their height is ~ efe~ ably 1.5 mm corresponding to the height of the stem of the fastening parts.
Figure 2 shows how the fastening parts is attached to the guide member of the invention. Figure 2(A) shows a conventional fastening parts 20 comprising stem 21, base 23, and anchor portion 22 which extends parallel in the longitudinal direction.
Figure 2(B) is a perspective view showing how fastening parts 20 is attached to guide member 1 of the invention. The fastening parts is not easily dislocated, because inner side surface 3 of the guide member 1 firmly contacts to the side surface of base 23 of fastening parts 20 or to the side surface of anchor 22. The inner side surface 3 of the guide member 1 functions to prevent the flow of liquid foaming raw material to stem 21 when said liquid foAming raw material is flowed from above in the drawing. In the drawing, end 24 of the fastening parts substantially coincides with end 4 of said guide member 1, but it is preferable to set it somewhat inwardly in consideration of the expansion of the fastening parts due to the heat of reaction. The height of inner wall 3 of the guide member is preferably the same as that of isolation member 20. Alternatively, the height of inner wall may be higher than that of isolation member 20. In that case, a narrow groove (not shown) is formed in both sides of the fastening parts on the urethane when it is integrally formed.
These narrow grooves, although anchored on the urethane, allow the fastening parts to flexibly accommodate the movements of the user.
Figure 2(C) is a longitlltlinAl cross-sectional view of Figure 2(B). The isolation member 5 of the guide member of the invention is provided somewhat inwardly from a guide end 4. The thickness of the isolation member is preferably 0.2-0.4 mm, which is about half of distance from one stem to next stem (0.5-0.7 mm), and its height is substantially equal to that of stem 21(1.5 mm). Because of this structural feature, the isolation member of the invention can be engaged between the rows of the stem as shown in the drawing. The isolation member preferably can move freely and is detachable so that it can be put in any desired position on stem surface 21 of fastening parts 20. The isolation member 5 functions to effectively prevent foaming raw material from penetrating through guide end 4 and to completely isolate the interior region of the isolation member from its exterior. The drawing shows only one side of the guide member, but it should be noted that the end on the other side is similAr.
Figure 3 is a longitll-linAl cross-sectional view of cushion material manufactured by integral molding method using the guide member of the invention. According to the method of the invention, at the first step, said isolation members 5 and 6 are engaged in predetermined position on stem 21 of said fastening parts 20. At the second step, it is attached to the interior of 2l96389 said guide member so that ends 32 and 33 of said fastening parts 20 respectively protrude from ends 4 and 7 of said guide member 1 of the invention. At the third step, bottom surface 10 of guide member 1 is f~xed firmly to the urethane metal mold (not shown). Finally, liquid foaming raw material is flowed into said urethane metal mold and is allowed to foam, and thereby urethane mold 31 and fastening parts 20 are formed integrally.
Thereafter, guide member 1 and isolation members 5 and 6 are removed.
When the foaming raw material is flowed on the bottom surface of the fastening parts within the guide member and it foams, the anchor portion 22 is inserted into the foamj anchoring the fastening parts to the foam.
Protruding portion 32 and 33 of fastening parts 20 become embedded into the urethane mold by length a. The length of embedded portion can be adjusted, and either one side or both sides of said fastening parts can be embedded.
According to the invention, the end portions of the fastening parts of the cushion material is embedded into the urethane mold, thereby it does not easily peel off. Therefore, it is the advantage that the fastening parts of the invention has higher peeling strength than prior art.
With the guide member of the invention, the peeling strength can be also improved without embedding the fastening parts into the urethane mold. If isolation members 6 and 6 are respectively located inwardly from each ends of guide member 1 of the invention, liquid foaming raw material can be completely cut offby the isolation members 5 and 6 after a little penetration.
As a result, only the surface of near both ends of the fastening parts is covered with foam, m~kin~ it harder to peel off. The peeling strength in this case can be adjusted by a location of the isolation members.
2l96389 By the aforementioned method, not only the need for additional parts but also the need for operations such as strict scaling are ~limin~ted, thereby production costs can be greatly reduced.
Figure 4 shows another embodiment of the guide member of the invention.
Figure 4(A) is a guide member whose only one side is opened and the other side end is sealed off with a wall with respect to the guide member 1 of the ~ fel~ed embodiment of the invention shown in Figure 1. Figure 4(B) shows another embodiment which includes double isolation members of the preferred embodiment of the invention. Figure 4(C) shows another embodiment which includes weir board made of-the same material as said isolation member and provided on both end surfaces of the guide portion, instead of the isolation member of the ~1 efel . ed embodiment. Figure 4(D) shows another embodiment which includes the isolation members of the ~lefelled embodiment and the weir board of Figure 4(C), wherein the ~lefelled embodiment is combined with the embodiment of Figure 4(G).
It will be clear to one skilled in the art that other various guide member structures are possible by combinations or variations of the above embodiments.
The guide member of the invention elimin~tes the need for any additional equipment or additional processes and makes it possible to effectively prevent the seepage of liquid foaming raw material onto the fastening surface.
Accvlvillg to integral molding method of the invention using said guide member of the invention, the need for any additional equipment or the need for a strict scaling process are completely eliminated, thereby it is possible to easily provide fastening parts with high peeling strength.
2l96389 As a result, production costs of cushion material are greatly reduced, and throughput is greatly improved.
Guide member and method for integral foam molding Technical Field The invention concerns a member for integrally forming a foam material such as urethane; specifically, it concerns a guide member for adhesively fixing a fastening parts to a urethane mold.
Background Art Cushion material in which the covering material is put onto urethane is generally used in seats in automobiles and other vehicles and aircraft, in chairs for home or office use, or in door linings or interior appointments. The urethane and covering material are usually put together detachably using a fastening parts that is fixed to a urethane mold.
In order to provide fastening parts on the urethane surface inexpensively and stably, the integral forming of urethane and fastening parts has been implemented. In the prior art, the fastening parts are previously covered so that the liquid foaming raw materials do not adhere to surface of the fastening parts, then the liquid foaming raw material is flowed in, and thereafter portions to which the material is attached are cut away.
With the conventional method, in order to prevent the liquid foaming raw material from adhering to the fastening surface, it has been necessary to pre-manufacture guide members which are the same length as each fastening parts and fit into a urethane metal mold. That is, the guide member must be remade for each desired length of fastening parts, which causes to increase the fabrication time and cost. In addition, additional equipment are needed for each fastening parts to prevent the liquid fo~ming raw material from f~owing onto the fastening surface, which results in the increasing of cost and the number of operation processes. Another drawback of the conventional method is that because the fastening parts has a relatively small peeling strength, the covering material of the cushion material easily peels off.
Thus the purpose of the invention is to provide a novel guide member that reduces cost and the number of processes.
Another purpose of the invention is to provide a new guide member that effectively cuts off the seepage of liquid foaming raw material onto the fastening surface.
A further purpose of the invention is to provide an integral molding method that improves the peeling strength of the fastening parts.
Disclosure of the Invention In order to achieve the above purposes, the invention comprises the following means.
According to the invention, the guide member for forming the fastening parts integrally with the urethane mold has longitllllin~lly extended body that has a concave cross-section and at least one opening end. The surface of its inner wall contact with side surfaces of said fastening parts to prevent the flow of liquid foaming raw material to the fastening surface.
In addition, to prevent said liquid foaming raw material from seeping in to the fastening surface of the interior of said guide member, said guide member may also include at least one isolation member near at least one of its ends.
The Said isolation member is provided such that it engages with the fastening surface of said fastening parts.
Moreover, the height of the inner wall of the guide member of the invention may be formed so that it is higher than the height of the fastening parts.
The isolation member is preferably a detachable thin plate made of spring material, and said guide portion is preferably made of aluminllm or aluminum alloy.
The method of the invention for integrally forming a fastening parts with the urethane mold, comprises the steps of: -setting the isolation member described in claim 2 to the desired position onthe fastening parts;
att~hing said fastening parts to said guide member described in claim 2 so that it extends outwardly from at least one end of said guide member;
f~xing said guide member to the urethane metal mold;
flowing liquid fo~ming raw material into said urethane metal mold; and removing said guide member and said isolation member after predetermined time.
Brief Description of the Drawings Figure 1 is a ~lefe~,ed embodiment of the guide member of the invention and its elevational cross-sectional view in the longitudinal direction.
Figure 2 shows the fastening parts attached to the guide member of the invention.
Figure 3 is a elevational cross-sectional view of cushion material produced by the integral molding method of the invention.
Figure 4 is another embodiment of the guide member of the invention.
Best Mode for C~r ,~yi,~g out the Invention Hereinafter, embodiments of the invention are described in detail, m~king reference to the drawings.
Figure 1 is a lJ~efe~ed embodiment of the guide member of the invention.
Guide member 1 for integral molding the fastening parts with the urethane mold comprises guide portion 2, which has an longitlltlin~lly extended body having a concave cross-sectional opening at ends 4 and 7, and isolation members 5 and 6 positioned somewhat inwardly from said ends 4 and 7 so as to be perpendicular to longitudinal axis 8.
Said guide portion 2 is preferably made of aluminum or aluminum alloy and is manufactured by extrusion moltling or injection molding. The longitudinal length of the guide portion varies depending on that of the fastening parts and the structure of cushion material, but the height of inner wall 3 is preferably 6-8 mm.
The width of the inner side of the guide member is substantially equal to the width of the fastening parts, so that when the fastening parts is attached, -the side surface of the fastening parts and inner side surface 3 of the guide member are contacted tightly. Also, a bottom surface 10 of guide member 1 is completely flat so as to be fixed firmly to the urethane metal mold.
The isolation members 5 and 6 are preferably thin plates made of spring material, alternatively may be in the shape of the letter C. They may also be made from any other materials that do not easily deform and degrade. The isolation members 5 and 6 are preferably located detachably to the inner wall surface of the guide member, and they may be fixed to predetermined position. The plate thickness of said isolation members 5 and 6 is preferable 0.2 mm. Their height is ~ efe~ ably 1.5 mm corresponding to the height of the stem of the fastening parts.
Figure 2 shows how the fastening parts is attached to the guide member of the invention. Figure 2(A) shows a conventional fastening parts 20 comprising stem 21, base 23, and anchor portion 22 which extends parallel in the longitudinal direction.
Figure 2(B) is a perspective view showing how fastening parts 20 is attached to guide member 1 of the invention. The fastening parts is not easily dislocated, because inner side surface 3 of the guide member 1 firmly contacts to the side surface of base 23 of fastening parts 20 or to the side surface of anchor 22. The inner side surface 3 of the guide member 1 functions to prevent the flow of liquid foaming raw material to stem 21 when said liquid foAming raw material is flowed from above in the drawing. In the drawing, end 24 of the fastening parts substantially coincides with end 4 of said guide member 1, but it is preferable to set it somewhat inwardly in consideration of the expansion of the fastening parts due to the heat of reaction. The height of inner wall 3 of the guide member is preferably the same as that of isolation member 20. Alternatively, the height of inner wall may be higher than that of isolation member 20. In that case, a narrow groove (not shown) is formed in both sides of the fastening parts on the urethane when it is integrally formed.
These narrow grooves, although anchored on the urethane, allow the fastening parts to flexibly accommodate the movements of the user.
Figure 2(C) is a longitlltlinAl cross-sectional view of Figure 2(B). The isolation member 5 of the guide member of the invention is provided somewhat inwardly from a guide end 4. The thickness of the isolation member is preferably 0.2-0.4 mm, which is about half of distance from one stem to next stem (0.5-0.7 mm), and its height is substantially equal to that of stem 21(1.5 mm). Because of this structural feature, the isolation member of the invention can be engaged between the rows of the stem as shown in the drawing. The isolation member preferably can move freely and is detachable so that it can be put in any desired position on stem surface 21 of fastening parts 20. The isolation member 5 functions to effectively prevent foaming raw material from penetrating through guide end 4 and to completely isolate the interior region of the isolation member from its exterior. The drawing shows only one side of the guide member, but it should be noted that the end on the other side is similAr.
Figure 3 is a longitll-linAl cross-sectional view of cushion material manufactured by integral molding method using the guide member of the invention. According to the method of the invention, at the first step, said isolation members 5 and 6 are engaged in predetermined position on stem 21 of said fastening parts 20. At the second step, it is attached to the interior of 2l96389 said guide member so that ends 32 and 33 of said fastening parts 20 respectively protrude from ends 4 and 7 of said guide member 1 of the invention. At the third step, bottom surface 10 of guide member 1 is f~xed firmly to the urethane metal mold (not shown). Finally, liquid foaming raw material is flowed into said urethane metal mold and is allowed to foam, and thereby urethane mold 31 and fastening parts 20 are formed integrally.
Thereafter, guide member 1 and isolation members 5 and 6 are removed.
When the foaming raw material is flowed on the bottom surface of the fastening parts within the guide member and it foams, the anchor portion 22 is inserted into the foamj anchoring the fastening parts to the foam.
Protruding portion 32 and 33 of fastening parts 20 become embedded into the urethane mold by length a. The length of embedded portion can be adjusted, and either one side or both sides of said fastening parts can be embedded.
According to the invention, the end portions of the fastening parts of the cushion material is embedded into the urethane mold, thereby it does not easily peel off. Therefore, it is the advantage that the fastening parts of the invention has higher peeling strength than prior art.
With the guide member of the invention, the peeling strength can be also improved without embedding the fastening parts into the urethane mold. If isolation members 6 and 6 are respectively located inwardly from each ends of guide member 1 of the invention, liquid foaming raw material can be completely cut offby the isolation members 5 and 6 after a little penetration.
As a result, only the surface of near both ends of the fastening parts is covered with foam, m~kin~ it harder to peel off. The peeling strength in this case can be adjusted by a location of the isolation members.
2l96389 By the aforementioned method, not only the need for additional parts but also the need for operations such as strict scaling are ~limin~ted, thereby production costs can be greatly reduced.
Figure 4 shows another embodiment of the guide member of the invention.
Figure 4(A) is a guide member whose only one side is opened and the other side end is sealed off with a wall with respect to the guide member 1 of the ~ fel~ed embodiment of the invention shown in Figure 1. Figure 4(B) shows another embodiment which includes double isolation members of the preferred embodiment of the invention. Figure 4(C) shows another embodiment which includes weir board made of-the same material as said isolation member and provided on both end surfaces of the guide portion, instead of the isolation member of the ~1 efel . ed embodiment. Figure 4(D) shows another embodiment which includes the isolation members of the ~lefelled embodiment and the weir board of Figure 4(C), wherein the ~lefelled embodiment is combined with the embodiment of Figure 4(G).
It will be clear to one skilled in the art that other various guide member structures are possible by combinations or variations of the above embodiments.
The guide member of the invention elimin~tes the need for any additional equipment or additional processes and makes it possible to effectively prevent the seepage of liquid foaming raw material onto the fastening surface.
Accvlvillg to integral molding method of the invention using said guide member of the invention, the need for any additional equipment or the need for a strict scaling process are completely eliminated, thereby it is possible to easily provide fastening parts with high peeling strength.
2l96389 As a result, production costs of cushion material are greatly reduced, and throughput is greatly improved.
Claims (6)
1. A guide member for integrally forming a fastening parts with a urethane mold, wherein the guide member has an longitudinally extended body that has a concave cross-section and at least one opening end, and the guide member accommodates said fastening parts so that the side surface of said fastening parts contacts to the inner wall surface of said guide member.
2. A guide member as described in claim 1 wherein the guide member father includes at least one isolation member provided near at least one end of said guide member such that it engages with the fastening surface of said fastening parts so as to prevent the seepage of said liquid foaming raw material into said guide member.
3. A guide member as described in claim 2 wherein the height of said inner wall surface is higher than the height of said fastening parts.
4. A guide member as described in claim 2 or 3 wherein said isolation member is a thin plate made of spring material.
5. A guide member as described in claims 1 through 4 wherein said guide member is made of aluminum or aluminum alloy.
6. A method for integrally forming a fastening parts with the urethane mold, comprising the steps of:
setting the isolation member described in claim 2 to the desired position on the fastening parts;
attaching said fastening parts to said guide member described in claim 2 so that it extends outwardly from at least one end of said guide member;
fixing said guide member to the urethane metal mold;
flowing liquid forming raw material into said urethane metal mold; and removing said guide member and said isolation member after predetermined time.
setting the isolation member described in claim 2 to the desired position on the fastening parts;
attaching said fastening parts to said guide member described in claim 2 so that it extends outwardly from at least one end of said guide member;
fixing said guide member to the urethane metal mold;
flowing liquid forming raw material into said urethane metal mold; and removing said guide member and said isolation member after predetermined time.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7167137A JP2704859B2 (en) | 1995-06-09 | 1995-06-09 | Guide member and method for integral foam molding |
| JPHEISEI7(1995)-167137 | 1995-06-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2196389A1 true CA2196389A1 (en) | 1996-12-10 |
Family
ID=15844118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002196389A Abandoned CA2196389A1 (en) | 1995-06-09 | 1996-05-30 | Guide member and method for integral foam molding |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6045731A (en) |
| EP (1) | EP0795385B1 (en) |
| JP (1) | JP2704859B2 (en) |
| KR (1) | KR100279021B1 (en) |
| AU (1) | AU724009B2 (en) |
| CA (1) | CA2196389A1 (en) |
| DE (1) | DE69626381T2 (en) |
| WO (1) | WO1996041707A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3565409B2 (en) | 1999-04-30 | 2004-09-15 | ジョンソン コントロールズ オートモーティブ システムズ株式会社 | Integrated foam molding method for sheet pad material |
| US7066532B2 (en) * | 2002-11-12 | 2006-06-27 | Lear Corporation | Ultrathin structural panel with rigid insert |
| US7153113B2 (en) * | 2003-07-24 | 2006-12-26 | Ykk Corporation Of America | Molds having a veneered pedestal for forming a foam object |
| JP4936378B2 (en) * | 2007-03-14 | 2012-05-23 | 東洋ゴム工業株式会社 | Cushion pad mold and cushion pad manufacturing method |
| US9144309B2 (en) * | 2011-12-22 | 2015-09-29 | Adams Mfg. Corp. | Foot for molded plastic furniture |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4802939A (en) * | 1983-12-13 | 1989-02-07 | Aplix, S.A. | Method for attaching a fastening tape to a molded article |
| CA1256278A (en) * | 1983-12-13 | 1989-06-27 | Bruno Queval | Gripping strip to be fixed to an article in the process of molding said article, and means for fixing said strip |
| JPS60127114A (en) * | 1983-12-15 | 1985-07-06 | Matsushita Refrig Co | Manufacture of formed insulation panel |
| US4673542A (en) * | 1985-06-14 | 1987-06-16 | General Motors Corporation | Method of making a foamed seat or cushion having integral fasteners |
| US4881997A (en) * | 1985-07-17 | 1989-11-21 | Velcro Industries. B.V. | Method for adapting separable fasteners for attachment to other objects |
| US4814036A (en) * | 1985-07-17 | 1989-03-21 | Velcro Industries B.V. | Method for adapting separable fasteners for attachment to other objects |
| JPS6157318A (en) * | 1985-07-30 | 1986-03-24 | Nissan Motor Co Ltd | Interior parts for motorcar and manufacture thereof |
| US4842916A (en) * | 1987-01-19 | 1989-06-27 | Kuraray Company Ltd. | Separable fastener component & moldings attached with such fastener component |
| JPS649708A (en) * | 1987-07-01 | 1989-01-13 | Inoue Mtp Kk | Molding method for cushion body |
| US5259905A (en) * | 1990-08-09 | 1993-11-09 | Velcro Industries B.V. | Method for manufacturing a separable fastener for incorporation into a seat bun |
| US5306735A (en) * | 1990-11-27 | 1994-04-26 | Kao Corporation | Polyurethane, process for producing the same, and process for producing polyurethane foam |
| DE537333T1 (en) * | 1991-05-03 | 1994-02-03 | Velcro Ind | MOLD INSERT. |
| JPH05220764A (en) * | 1992-02-13 | 1993-08-31 | Kuraray Co Ltd | Mold for molding resin and production of molded object |
| JP2708084B2 (en) * | 1992-03-23 | 1998-02-04 | ワイケイケイ株式会社 | Method of attaching hook-and-loop fastener to seat cushion material and foam molding die |
| US5234639A (en) * | 1992-10-19 | 1993-08-10 | Davidson Textron Inc. | Flexible gasketing device for foam control in crash pad pour molds |
| JP3404100B2 (en) * | 1993-11-29 | 2003-05-06 | 株式会社クラレ | Locking member for mold-in molding |
-
1995
- 1995-06-09 JP JP7167137A patent/JP2704859B2/en not_active Expired - Lifetime
-
1996
- 1996-05-30 WO PCT/JP1996/001469 patent/WO1996041707A1/en active IP Right Grant
- 1996-05-30 US US08/793,148 patent/US6045731A/en not_active Expired - Lifetime
- 1996-05-30 EP EP96920012A patent/EP0795385B1/en not_active Expired - Lifetime
- 1996-05-30 CA CA002196389A patent/CA2196389A1/en not_active Abandoned
- 1996-05-30 AU AU58451/96A patent/AU724009B2/en not_active Ceased
- 1996-05-30 KR KR1019960707307A patent/KR100279021B1/en not_active IP Right Cessation
- 1996-05-30 DE DE69626381T patent/DE69626381T2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| AU5845196A (en) | 1997-01-09 |
| AU724009B2 (en) | 2000-09-07 |
| KR100279021B1 (en) | 2001-01-15 |
| DE69626381D1 (en) | 2003-04-03 |
| EP0795385B1 (en) | 2003-02-26 |
| JP2704859B2 (en) | 1998-01-26 |
| US6045731A (en) | 2000-04-04 |
| DE69626381T2 (en) | 2003-10-23 |
| EP0795385A4 (en) | 2001-02-28 |
| EP0795385A1 (en) | 1997-09-17 |
| WO1996041707A1 (en) | 1996-12-27 |
| JPH08336839A (en) | 1996-12-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |